The strong coupling between the power grid and the communication system may cause cascade fault propagation,leading to large-scale power outages.In order to quantitatively analyze the influence of interdependence on the vulnerability of power systems,the cyber-physical power system(CPPS)is modeled.This paper establishes a dependency model using artificial information networks and IEEE 118 bus systems and evaluates and compares the system vulnerability of CPPS under random and malicious attacks based on three interdependent models:degree-betweenness,degree-electrical degree,and random link.The sim-ulation results show that different connection modes,coupling degrees,and attack types can affect the vulnerability of CPPS,while CPPS with a"degree-electrical degree"interdependence model shows higher robustness in the face of random attacks,and its performance is better than other interdependent models when subjected to malicious attacks.
coupling modelcascade failurecyber-physical power systemrobustness
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